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The term for a sentence that has more than one independent clause and one or more dependent clauses.
Example: Although I used to eat a lot of chocolate, I don't anymore because once I got sick after eating fourteen Reese's Cups in a row.
What is a compound-complex sentence?
Although I used to eat a lot of chocolate = dependent
I don't anymore = independent
I got sick after eating fourteen Reese's Cups in a row = independent